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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QTimer>
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#include <QTime>
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#include <QObject>
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#include <cmath>
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#include <qlineseries.h>
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QTCOMMERCIALCHART_USE_NAMESPACE
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#define PI 3.14159265358979
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static const int numPoints =100;
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class WaveGenerator: public QObject
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{
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Q_OBJECT
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public:
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WaveGenerator(QLineSeries* series1, QLineSeries* series2) :
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m_series1(series1),
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m_series2(series2),
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m_wave(0),
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m_step(2*PI/numPoints)
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{
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QTime now = QTime::currentTime();
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qsrand((uint)now.msec());
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int fluctuate = 100;
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for (qreal x = 0; x <= 2*PI; x+=m_step) {
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series1->append(x, fabs(sin(x)*fluctuate));
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series2->append(x, fabs(cos(x)*fluctuate));
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}
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QObject::connect(&m_timer,SIGNAL(timeout()),this,SLOT(update()));
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m_timer.setInterval(5000);
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m_timer.start();
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};
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public slots:
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void update()
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{
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int fluctuate;
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for (qreal i = 0, x = 0; x <= 2*PI; x+=m_step, i++) {
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fluctuate = qrand() % 100;
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m_series1->replace(x, fabs(sin(x)*fluctuate));
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fluctuate = qrand() % 100;
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m_series2->replace(x, fabs(cos(x)*fluctuate));
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}
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}
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private:
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QLineSeries* m_series1;
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QLineSeries* m_series2;
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int m_wave;
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qreal m_step;
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QTimer m_timer;
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};
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